2111011010920 has 64 divisors (see below), whose sum is σ = 5714014780800. Its totient is φ = 685681770240.

The previous prime is 2111011010909. The next prime is 2111011010921. The reversal of 2111011010920 is 290101101112.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (2111011010921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198397971 + ... + 198408610.

It is an arithmetic number, because the mean of its divisors is an integer number (89281480950).

Almost surely, 2^{2111011010920} is an apocalyptic number.

2111011010920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111011010920 is an abundant number, since it is smaller than the sum of its proper divisors (3603003769880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2111011010920 is a wasteful number, since it uses less digits than its factorization.

2111011010920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396806618 (or 396806614 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 2111011010920 in words is "two trillion, one hundred eleven billion, eleven million, ten thousand, nine hundred twenty".